update eslint config and add eslint ignore

.eslintignore

@@ -0,0 +1,9 @@
+jest.*.js
+webpack.*.js
+
+etc
+coverage
+build
+node_modules
+dist
+images

package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "start": "webpack-dev-server --config ./webpack.config.js --mode development",
     "test": "jest --watch --coverage",
-    "lint": "./node_modules/eslint/bin/eslint.js src/**/*.js src/**/*.jsx",
+    "lint": "eslint --ext .js --ext .jsx . --debug",
     "add-locale": "lingui add-locale",
     "extract-strings": "lingui extract",
     "compile-strings": "lingui compile"